Same here pretty dry a bit of the yr so notmuch concerned about rust ussally here either.(didnt know it was very dry in Wi )

That dehumidifer idea for other places tho sounds like a good.

And as others mentioned also they have silicon?/oil impregnated socks& covers etc. And chips, packs, cans etc that are rust inhibiters you stick into a safe

Not that its a real safe but atwalmart& other places they have gun cabnets- that are lockable & will keep children & causal thiefs that arein a hurry out of anyways& easyier to control the humidy in a smaller space.( About $100.00 for those)